A buffer contains the weak acid HA and its conjugate base A . The weak acid
Question:
A buffer contains the weak acid HA and its conjugate base A–. The weak acid has a pKa of 4.82 and the buffer has a pH of 4.25.
Which statement is true of the relative concentrations of the weak acid and conjugate base in the buffer?
Transcribed Image Text:
(a) [HA]> [A] (b) [HA]< [A] (c) [HA] = [A]
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 60% (5 reviews)
a Since the pH of the ...View the full answer
Answered By
Diksha Bhasin
I have been taking online teaching classes from past 5 years, i.e.2013-2019 for students from classes 1st-10th. I also take online and home tuitions for classes 11th and 12th for subjects – Business Studies and Economics from past 3 years, i.e. from 2016-2019. I am eligible for tutoring Commerce graduates and post graduates. I am a responsible for staying in contact with my students and maintaining a high passing rate.
5.00+
1+ Reviews
10+ Question Solved
Related Book For
Question Posted:
Students also viewed these Sciences questions
-
Consider a buffer composed of the weak acid HA and its conjugate base A . Which pair of concentrations results in the most effective buffer? a) 0.10 M HA; 0.10 M A c) 0.90 M HA; 0.10 M A b) 0.50 M...
-
The beaker on the left below represents a buffer solution of a weak acid HA and its conjugate base, A. (Water molecules and spectator ions have been omitted for clarity.) a. Which beaker on the...
-
A buffer contains equal amounts of a weak acid and its conjugate base and has a pH of 5.25. Which would be a reasonable value of buffer pH after the addition of a small amount of acid? (a) 4.15 (b)...
-
When will the balance in the intercorporate investment account be the same if the investment is carried at fair value, or if the equity method of accounting is used?
-
Sydney Greene asks for your help concerning the relevance of variable and fixed costs in incremental analysis. Help Sydney with her problem.
-
What physical change in metamorphic rock signals the end of metamorphism? (a) freezing (b)melting (c) crystallization (d) evaporation
-
how do we manage supply dynamics?
-
Oasis Company has used the dollar-value LIFO method for inventory cost determination for many years. The following data were extracted from Oasiss records. Instructions Calculate the index used for...
-
Flip's Pizzeria Inc. has the following financial items for the current year: Advertising Expenses $40,000 Cost of Goods Sold $440,000 Other Operating Expenses $355,000 Sales $2,190,000 Cost of...
-
What is the pH of a buffer that is 0.120 M in formic acid (HCHO 2 ) and 0.080 M in potassium formate (KCHO 2 )? For formic acid, K a = 1.8 * 10 -4 . a) 2.33 b) 3.57 c) 3.74 d) 3.91
-
Which solution is a buffer? (a) A solution that is 0.100 M in HNO 2 and 0.100 M in HCl (b) A solution that is 0.100 M in HNO 3 and 0.100 M in NaNO 3 (c) A solution that is 0.100 M in HNO 2 and 0.100...
-
Simplify the given expressions. 4sin 1/2x cos 1/2x
-
Can Google be characterized as a monopoly? Justify your answer by specifying and comparing the characteristics of a monopoly with those of Google. What is competition law? How would you justify the...
-
In the case below design and draw a Rich Picture that identifies the key stakeholders, actors, power and decision-making authorities. The novel coronavirus has turned the world upside down as a...
-
1. Two spherical stars A and B have densities PA and PB, respectively. A and B have the same radius, and their masses MA and M are related by MB = 2M. Due to an interaction process, star A loses some...
-
2 4. A rod of length 2 cm makes an angle rad with the principal axis of a thin convex lens. The lens has a focal 3 40 3 cm from the object as shown in the figure. The height of the length of 10 cm...
-
7. Consider an LC circuit, with inductance L = 0.1 H and capacitance C = 103 F, kept on a plane. The area of the circuit is 1 m. It is placed in a constant magnetic field of strength Bo which is...
-
For each of the following cases, find the complex power, the average power, and the reactive power: (a) v(t) = 112 cos( t + 10) V, i(t) = 4 cos( t - 50) A (b) v(t) = 160 cos 377t V, i(t) = 4 cos(377t...
-
To help you become familiar with the accounting standards, this case is designed to take you to the FASBs Web site and have you access various publications. Access the FASBs Web site at...
-
Using source transformation, find i in the circuit of Fig. 10.94 . 5 mF 20 25 cos(20t + 15) (+ 20 2 ell
-
Let i s = 5 cos (100t) A. Calculate the voltage across the capacitor, v c . Also calculate the value of the energy stored in the coupled coils at t = 2.5Ï ms. 100 mH 200 mH 200 mH 500 F is 20 2
-
A transformer having 2,400 turns on the primary and 48 turns on the secondary is used as an impedance matching device. What is the reflected value of a 3- load connected to the secondary?
-
Suppose a smoker indicates on an application for medical expense insurance that he is a nonsmoker. Is this misrepresented material?
-
Question 10. What is the effect of traders storing grain to wait for higher prices? 1. It is essential in preventing grain shortages. 2. Traders are able to monopolize the market. 3. Most shortages...
-
Differentiate between the profit and loss from writing a covered call option versus a naked call option
Study smarter with the SolutionInn App